Geely EC718, EC718RV, EC715, EC715RV. Manual part — 57
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 57
1
3
5
7
8
6
4
2
9
10
11
12
13
23
24
25
26
27
28
29
30
37
51
52
53
54
55
56
57
58
59
60
61
62
63
64
38
39
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
14
15
16
17
18
19
20
21
22
ECM Harness Connector EN01
1
2
Cylinder No.4 Fuel Injector Harness
Connector EN14
FE02-5074b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.4 fuel injector wiring harness
connector EN14.
(c)
Disconnect ECM harness connector EN01.
(d)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EN14 terminal No.1 and ECM
harness connector terminal No.64. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EN14 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground. If there
is no short circuit, repair the faulty part.
(f)
Measure voltage between cylinder No.4 fuel injector wiring
harness connector EN14 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. If there is
no short circuit, repair the faulty part.
Test Items
Standard Value
Resistance Between EN14 (1) and EN01
(64)
Less than 1 Ω
Resistance Between EN14 (1) and a
Reliable Ground
10 kΩ or higher
Voltage Between EN14 (1) and a Reliable
Ground
0 V
Execute next step as per normal.
Next
Step 7
Check ECM power supply circuit.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Repair the faulty part.
Yes
Step 8
Replace ECM.
Next
Step 9
Use scan tool to confirm whether the DTC code is stored again.
(a)
Connect scan tool to the datalink connector.
(b)
Turn the ignition switch to "ON" position.
(c)
Clear DTC code.
(d)
Start and run the engine at idle speed to warm up the engine
for at least 5 min.
(e)
Road test the vehicle for at least 10 min.
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
Engine
Control System JL4G18-D
2-143
No
Intermittent Fault. Refer to
Yes
Step 10
Diagnostic completed.
5. Repair Instructions:
Replace the fuel injector. Refer to
.
2.2.7.28 DTC P0300-P0304
1. DTC Descriptor:
DTC
P0300
Multi-Cylinder Misfire
DTC
P0301
Cylinder No.1 Misfire
DTC
P0302
Cylinder No.2 Misfire
DTC
P0303
Cylinder No.3 Misfire
DTC
P0304
Cylinder No.4 Misfire
The engine control module (ECM) uses information from the crankshaft position (CKP) sensor and the camshaft position (CMP)
sensors to determine when an engine misfire is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder
ECM is able to detect individual misfire events. When a misfire happens, unburnt mixture will be discharged into the exhaust system
and burnt in the exhaust system. A misfire rate that is high enough can cause 3-way catalytic converter damage. The malfunction
indicator lamp (MIL) will ash ON and OFF when the conditions for catalytic converter damage are present. A DTC will be set.
2-144
Control System JL4G18-D
Engine
2. DTC Code Set Up and Removal Conditions:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC
(Control Strategy)
Fault Locations
P0300
P0301
P0302
P0303
P0304
1. A Misfire Rate Sufficient to
Cause Damage to Catalytic
Converters
2. A Misfire Rate Sufficient to
Cause the Emission
Deterioration
3. Doubtful Error
1. Each Cylinder Catalytic
Converter Damage Related
Misfire Counters.
2. Catalytic Converter Damage
Misfire Rate More Than 4.5%
-20%.
3. Four Emissions Related All
Cylinder Misfire Counts In One
Driving Cycle.
4. Misfire Rate Causing Emission
Deterioration More Than 3.0%.
5. After Starting Each Cylinder
Emission Related Misfire
Counts During a Count Cycle.
6. Undetected Bad Circuit.
7. Fuel Control Inactivated.
8. Torque Intervention Inactivated.
9. Engine speed is greater than
600 rpm and less than 5,000
rpm.
10. Intake air temperature is greater
than -30°C (-22 ºF).
1. Connector Loose or Poor
Connection
2. Vacuum Tube Hose Broken or
Loose
3. Ignition System
4. Fuel Injectors
5. Fuel Pressure
6. Intake Air Pressure Sensor
7. Engine Coolant Temperature
Sensor
8. Cylinder Compression Pressure
9. Valve Clearance and Timing
10. Evaporative Emission Control
System
11. Purged Crankcase Ventilation
System
12. Intake System
13. Poor Exhaust System
Ventilation
14. ECM
Engine
Control System JL4G18-D
2-145
3. Schematic:
Ignition System
01
IF30
From Battery
Main Relay
1,4 Cylinder Ignition Coil
2,3 Cylinder Ignition Coil
Engine
Control
Module
Ignition Switch IG1
FE02-5075b
2-146
Control System JL4G18-D
Engine
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст